TP-LINK 300Mbps AV500 WiFi Powerline Extender Starter Kit Review
 

The TL-WPA4220KIT comes pretty cheap and also provides wireless connectivity for maximizing the wireless range of the current network. Despite the fact that we get an advertised speed of 500Mbps, the LAN ports are capped at 100Mbps. We must also take in account that the speed may vary depending on the quality of the wiring and other factors.

http://www.madshrimps.be/articles/article/1000534/